USS New Hampshire may refer to one of a number of United States Navy ships named in honor of the state of New Hampshire:
- was authorized as the in 1816, one of a group of nine ships of the line, but not launched until 1864 as a storeship and destroyed by fire in 1921
- was a commissioned in 1908 and sold for scrapping in 1923
- was a authorized in 1940 but cancelled in 1943 before her keel was laid
- is a nuclear-powered attack submarine, commissioned in 2008 and currently in active service